Scale-platform.



G. SGHOBTTINGER.

SCALE PLATFORM.l

APPLIUATION FILED 11:12.14, 1911.

1,012,105. f Patented 111111111911.`

` @Hoz/nap.

, COLUMBIA PLANOGRAPH anvAs'mNG'roN, nA c.

UNITED Sllit'llflt QFFICE.

GEORGE SCHOETIUER: GF BETE' To all ywho/in it mail.' con-cern:

residing; :it Detroit in the rennt): oi li :iyne

:ind yStute ol iilirhignin, have ii'ii'ented eer- 1 thin new :indnsetiil vimproveinents in ideali Platforms7 oit which the iliollowing isn speri tiention, reference being had therein to the nccompnnyingdrawings.

This invention relates to iyeigjhiiig-senles7 :ind more especially tothat class 'thereo't` which nre generally known ns plzit'l'orm scali-Hs.und it has tor one olf itsl objects :in improved system of supportingthe plnttorni and its connection with the benin.

lnrtl'ier objects of the inrention will hereinaitter tippen r und bedetined in the claims.

The invention hns been eleirly illustrated in the accompanying drawings,in which similar characters denote similar parts, find in Which- Figure1 is n tace View ot zr s 'tile embodying my invention, the pl:ittorm-inclosing casing being shown in section on line 1, l oi F ig. Q;Fig. Q is fr Vertical section on line 9 Z oil Fig. 1, and Fig. is ahorizoifitzil section on line 3, 3 ot' Fig. Q.

Briefly stated., the platform is supported on its tour corners, and thebenin is tnlcrnmed directly belo y dnd 'within the contines of thesesupports. Two adjacent corners are supported. directly on the beninitself; While the other two corners are snpported respectively by :ipair oit ind.epen-:ilent crossed levers which are linked to the benin,so organized that all tour corners ot the platform rise zinil't'zillsiinnltnneonsly and for the same amount, :1nd thus preserye the levelcondition thereof.

Referring to the drawings, :i base l0, hns n, top-plate 11 on which theseveral. supporting parts of the scale are mounted. A cas- 'ing 12 maybe pivoted to inclose the beninmechnnisn'i, and it, has at one endthereof e tubular column 123 which may huye any snitableindicating-device :it its top, for in stance n dial 1%1Y over which epointer 15 travels to show the Weight by the descent ot the plattformagainstthe resistance ot springs or Weights Whichever the ense may be.In the present instance I have illustrated, as n sample of suchres'stzince means, springs 16 attached to :i tension rod 17 which isconnected directly with the beam B of the scale, by knife-edges 18 fixedon the skeleton arm 19 of the benin and sented in the Specification ofLetters Patent.

"Jerome Patented Dec. 19, 1911.

binnehew ot u. bifnrcnted strap-end Q0 cui ried by lower end` ot thetension rod 1T. be ot any ',lesired con i ',in'tion, or any other deitedthei rtor.

bese plee 1l :ire ptir i 'which t1, Y is tilt* ietf Flecha tre-:ini lions which u re snpnings spaced some dissee F 3) to t'orin e. broad tills above stated, D orteil it its 'ifonr cor Y being` provided nt, itsinn ot dined lugs 27' rest e Y, i" 25% secured to the benintlin/t :idirect beam-support tor i is eitziblished :it those two rllhe platformextends :ici-oss 'the nni-piiot posts :'25 and is supported at the tiroremaining corners in an indirect man ioby the benin il, n, pair ot lugs30 (see big'. l.) de;iending` troni the platform :ind having; enrs 3lwhich curry cone-points 3Q sented in strep-links 33. del respectively.These linl :ire in tnrn, suspended. on conepoints 35. T543 securedrespectively in the or lmid-rnrrying ends ot n, pnir ot' ependentbnleneelevers 2377 88 which are disposed in the vertical pinne but crosseach other in the manner shown in Figs. 1 :ind 3, riz: the lever 3T hnsin opening` C37 through which the plein. other lever 3S passes und whichpermits both leifers to play treely and independently ott each other ontheir respective pivot-supports, the lever 3S having ai parir ofknife-edges 39 supported on posts #ll-O which are secured on the baseplate; While the sti-zicltlliiig lever 37 has knife-edges #l1 Whichrestl on posts 4t2 also secured on .smid buse plate 11. The other orcheck ends ot the levers o? and 38 have, respecttnlly. ctninoints #13.514 which are connected with the benin B, the letter having :i pair otarms 117x, -t-(, extending 'forward ot tl pivot or tnlcrnin posts Whilethe nrins 19 extend rearwardly therefrom. Uonnection between the arms4G, :ind the levers 37v` 38 is established by ineens oit links 117iwhich nre provided With cone-points i-,9, 50, respectively in eng`gement with the firms 115. L16.

It may be stated at this time7 that the :irnis L15. 6 of the benin donot in reality serve as direet t supports 7 for the platform7 but simplyas follow-np devices to regnlnte the rocking movement of thebalancelevers 37 and 38, as the platform descends, in accordance withthe descending movement of the arm 19 of the beam. In order to explainthis point fully, the question of leverage has to be considered, also,the ratio of the platform-connections on the beam B (edge Q6 to edge29e-(edge Q6 to point 50) being 2 3-1. ln a` like manner the v*leverageof the balance lever 23T (edge ll to point 255)+(edge ll to point 453)is also 9F34. sind, furthermore the leverage of the bal ance lever Se(edge to point 3G)+edge 259 to point dit) also equal 2 2-1. Bearingthese proportions in mind, it will now be understood that, when it issupposed the platform is loaded and that the platform-supporting edge Q8on the beam B descends one inch. the forward end of the platformnaturally7 tends to descend also. But the distance which this end of theplatform' can descend is entirely7 and completelyr controlled by theforward arms l5 l@ of the beam. the ends of these arms rising one-halfinch, thus allowing the short arms of the balance levers 3T and 38 toswing upward for one-half inch also. This means that the long arms ofthese levers may descend one inch; and, inasmuch as the platform isdirectly connected with these long arms (through the suspension-links83, 3st), it follows that the front end of the platform will descend oneinch, just the same as the rear end, and a perfeetequilibrium of theplatform will be maintained.

rl`he proportions above stated, are of course, subject to changecollectively, the

Q-f-l relation being merely preferred in the present organization.Likewise many other changes may be made in the construction and generalassemblage of the severa-l elements without departing from the spirit ofthe invention.

I claim:

l. The combination with a base, and a beam pivotally supported thereonand having a load carrying arm, ofa platform sup ported at one enddirectly on said arm, a pair of chech arms extending from the beamoppositely to the load-carrying arm, a pair of balance levers connectingthe front end of the platform with said check-arms, respectively, andmeans for pivotally supporting said balance leversI at a pointintermediate their ends.

2. The combination with a base, and a beam pivotally supported thereonand having a load carrying arm, of a platform supported at one enddirectly on said arm, a pair of check arms extending from the beamoppositely to the load-carrying arm, a pair of balance levers connectingthe front end of the platform with said check-arms, respectively, andalined posts on the base for supporting said balance levers at a pointintermediate their ends.

n testimony whereof I affix my signature in presence of two witnesses.

GEORGE SCHOETTINGER.

Vitnesses GEO. PERKINS, ANNA C. RaviLnn.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents.

Washington, D. C.

